pgsql: Merge postmaster and postgres command into just postgres.

Log Message:
-----------
Merge postmaster and postgres command into just postgres. postmaster
symlink is kept for now for compatibility. To call single-user mode, use
postgres --single.

Modified Files:
--------------
pgsql/doc/src/sgml:
arch-dev.sgml (r2.26 -> r2.27)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/arch-dev.sgml.diff?r1=2.26&r2=2.27)
backup.sgml (r2.80 -> r2.81)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/backup.sgml.diff?r1=2.80&r2=2.81)
client-auth.sgml (r1.90 -> r1.91)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/client-auth.sgml.diff?r1=1.90&r2=1.91)
config.sgml (r1.64 -> r1.65)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml.diff?r1=1.64&r2=1.65)
datatype.sgml (r1.167 -> r1.168)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/datatype.sgml.diff?r1=1.167&r2=1.168)
func.sgml (r1.321 -> r1.322)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml.diff?r1=1.321&r2=1.322)
installation.sgml (r1.257 -> r1.258)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/installation.sgml.diff?r1=1.257&r2=1.258)
maintenance.sgml (r1.55 -> r1.56)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/maintenance.sgml.diff?r1=1.55&r2=1.56)
manage-ag.sgml (r2.46 -> r2.47)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/manage-ag.sgml.diff?r1=2.46&r2=2.47)
monitoring.sgml (r1.32 -> r1.33)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/monitoring.sgml.diff?r1=1.32&r2=1.33)
problems.sgml (r2.25 -> r2.26)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/problems.sgml.diff?r1=2.25&r2=2.26)
protocol.sgml (r1.64 -> r1.65)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/protocol.sgml.diff?r1=1.64&r2=1.65)
regress.sgml (r1.51 -> r1.52)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/regress.sgml.diff?r1=1.51&r2=1.52)
runtime.sgml (r1.371 -> r1.372)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml.diff?r1=1.371&r2=1.372)
start.sgml (r1.40 -> r1.41)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/start.sgml.diff?r1=1.40&r2=1.41)
storage.sgml (r1.10 -> r1.11)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/storage.sgml.diff?r1=1.10&r2=1.11)
pgsql/doc/src/sgml/ref:
alter_database.sgml (r1.17 -> r1.18)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/alter_database.sgml.diff?r1=1.17&r2=1.18)
alter_role.sgml (r1.5 -> r1.6)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/alter_role.sgml.diff?r1=1.5&r2=1.6)
initdb.sgml (r1.35 -> r1.36)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/initdb.sgml.diff?r1=1.35&r2=1.36)
ipcclean.sgml (r1.11 -> r1.12)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/ipcclean.sgml.diff?r1=1.11&r2=1.12)
pg_ctl-ref.sgml (r1.32 -> r1.33)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_ctl-ref.sgml.diff?r1=1.32&r2=1.33)
pg_resetxlog.sgml (r1.15 -> r1.16)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_resetxlog.sgml.diff?r1=1.15&r2=1.16)
postgres-ref.sgml (r1.46 -> r1.47)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/postgres-ref.sgml.diff?r1=1.46&r2=1.47)
postmaster.sgml (r1.56 -> r1.57)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/postmaster.sgml.diff?r1=1.56&r2=1.57)
reindex.sgml (r1.29 -> r1.30)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/reindex.sgml.diff?r1=1.29&r2=1.30)
show.sgml (r1.39 -> r1.40)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/show.sgml.diff?r1=1.39&r2=1.40)
pgsql/src/backend:
Makefile (r1.114 -> r1.115)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/Makefile.diff?r1=1.114&r2=1.115)
pgsql/src/backend/bootstrap:
bootstrap.c (r1.216 -> r1.217)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/bootstrap/bootstrap.c.diff?r1=1.216&r2=1.217)
pgsql/src/backend/main:
main.c (r1.102 -> r1.103)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/main/main.c.diff?r1=1.102&r2=1.103)
pgsql/src/backend/postmaster:
autovacuum.c (r1.19 -> r1.20)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/autovacuum.c.diff?r1=1.19&r2=1.20)
pgarch.c (r1.22 -> r1.23)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/pgarch.c.diff?r1=1.22&r2=1.23)
pgstat.c (r1.127 -> r1.128)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/pgstat.c.diff?r1=1.127&r2=1.128)
postmaster.c (r1.485 -> r1.486)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/postmaster.c.diff?r1=1.485&r2=1.486)
syslogger.c (r1.24 -> r1.25)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/syslogger.c.diff?r1=1.24&r2=1.25)
pgsql/src/backend/tcop:
postgres.c (r1.487 -> r1.488)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/tcop/postgres.c.diff?r1=1.487&r2=1.488)
pgsql/src/bin/initdb:
initdb.c (r1.117 -> r1.118)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/initdb/initdb.c.diff?r1=1.117&r2=1.118)
pgsql/src/bin/pg_ctl:
pg_ctl.c (r1.68 -> r1.69)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_ctl/pg_ctl.c.diff?r1=1.68&r2=1.69)